2142012405 has 128 divisors (see below), whose sum is σ = 4064256000. Its totient is φ = 954132480.

The previous prime is 2142012401. The next prime is 2142012409. The reversal of 2142012405 is 5042102412.

It is an interprime number because it is at equal distance from previous prime (2142012401) and next prime (2142012409).

It is not a de Polignac number, because 2142012405 - 2² = 2142012401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142012401) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8962276 + ... + 8962514.

It is an arithmetic number, because the mean of its divisors is an integer number (31752000).

Almost surely, 2^2142012405 is an apocalyptic number.

It is an amenable number.

2142012405 is a deficient number, since it is larger than the sum of its proper divisors (1922243595).

2142012405 is a wasteful number, since it uses less digits than its factorization.

2142012405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 2142012405 is about 46281.8798775503. The cubic root of 2142012405 is about 1289.0625573128.

Adding to 2142012405 its reverse (5042102412), we get a palindrome (7184114817).

The spelling of 2142012405 in words is "two billion, one hundred forty-two million, twelve thousand, four hundred five".